linux-kernel - Re: [KVM PATCH v3 2/2] kvm: add support for irqfd via eventfd-notification interface

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Message-ID: <20090503192507.GA15780@redhat.com>
Date:	Sun, 3 May 2009 22:25:07 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Gregory Haskins <ghaskins@...ell.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, davidel@...ilserver.org
Subject: Re: [KVM PATCH v3 2/2] kvm: add support for irqfd via
	eventfd-notification interface

On Sun, May 03, 2009 at 10:17:16PM +0300, Avi Kivity wrote:
>> Actually there's a third option: add KVM_MASK_IRQ, KVM_UNMASK_IRQ ioctls
>> which will block/unblock guest from getting interrupt on this irq,
>> whatever the source.  Interrupts are queued in kernel while masked. A
>> third ioctl KVM_PENDING_IRQS will return the status for a set if IRQs.
>> qemu would call these ioctls when guest edits the MSIX vector control or
>> reads the pending bit array.
>>   
>
> I think this is the best option.

Sounds good.

-- 
MST
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